PS288_PS388_PS588_981-0424-002D - 第154页

Maintenance ■ Workspace, Head and Gantry 4—14 Data I/O • 981-0424 -002 back 1b. Click V acuum to the OFF position. 1c. Click Blow-of f to the ON position. Figure 4-9: V acuum (shown OFF) and Blow -off (shown ON) on the I…

■ Workspace, Head and Gantry ◘ Adjusting Probe Blow-Off Pressure

PS Series Owner’s Manual 4—13

back

2. Pull off the breakaway stem and check the O-ring. Replace if

necessary.

3. Reassemble.

Cleaning the Probe Tip

To clean the Probe tip:

1. Move the PNP head to a convenient position by clicking one of

the yellow labels on the Gantry Window.

2. Push the E-Stop.

3. Wipe the tip with a damp cloth. (Do not use alcohols or sol-

vents.)

Note: Do not touch the probe tip. Finger oils can cause small

devices to stick.

Adjusting Probe Blow-Off Pressure

Note: The flow controls are set at the factory and should not

require adjustment. If adjustments need to be made, they should be

done in small steps until the desired results are reached.

Blow-off is a small puff of air applied at the probe during the device

drop event to assist in removing a device from the probe. Blow-off is

produced by a vacuum generator on the PNP head (and at the Tape

Output PNP head, if Tape Output is present). If set too high, blow-off

could cause device misalignment during placement.

To adjust blow-off pressure on any vacuum generator:

1. Preparation—

1a. At the I/O Interface Window (System > Misc. I/O), select the

desired vacuum generator.

Figure 4-8: The System Window is a menu to many subsystems

including Shuttle/Options.

Maintenance ■ Workspace, Head and Gantry

4—14 Data I/O • 981-0424-002

back

1b. Click Vacuum to the OFF position.

1c. Click Blow-off to the ON position.

Figure 4-9: Vacuum (shown OFF) and Blow-off (shown ON) on the

I/O Interface Window.

2. Vacuum generator—

2a. On top of the vacuum generator, locate the blow-off adjustment

screw above the valve coils (where the wires plug in). See Figure

4-10. The vacuum generator block at the main PNP head will

need to be removed for access.

Figure 4-10: The Blow-off adjustment screw on PNP head vacuum

generator.

3. Adjust—

3a. Turn the adjustment screw in fully clockwise. This blocks all air

and there is no blow-off (puff of air) at the PNP probe.

3b. Turn the adjustment screw 1/2 turn counterclockwise.

For instructions to remove the

Vacuum Generator at the

main PNP head see Vacuum

Generator Filters and Silenc-

ers on page 4-15.

■ Workspace, Head and Gantry ◘ Checking the Automatic Tray Feeder

PS Series Owner’s Manual 4—15

back

Checking the Automatic Tray Feeder

[TF20 Tray Feeder only]

1. Stop or Pause a job if one is running.

2. Check the automatic Tray Feeder for damaged or broken parts

and replace as necessary.

3. Visually inspect the conveyor belts for dirt, nicks, or other signs

of damage.

4. If the conveyor belts are dirty, clean with dry, compressed air

and wipe with a dry, lint-free cloth and isopropyl alcohol.

5. Check the urethane pinch roller attached to the tray clamping

mechanism for signs of wear or damage. Replace as necessary.

Clean with a dry, lint-free cloth and isopropyl alcohol.

Replacing the Input Air Filter

1. Shut off shop air and disconnect the input air line from the Air

Filter/Regulator.

2. Unscrew the air contamination col-

lection bowl housing.

3. Pull off the clear collection bowl.

Clean out any dirt, oil, or water.

4. Unscrew the black knob below the

filter.

5. Pull off the filter. Clean or replace

as necessary.

Reinstall in reverse order being careful

not to damage the O-ring on the bowl.

Reconnect the shop air supply line.

Figure 4-11: Replacing the Air Filter/Regulator.

Vacuum Generator Filters and Silencers

This procedure covers removing and cleaning or replacing vacuum

generator parts for all vacuum generators on the PS Machine.

For more information see

the Tray Feeder manual that

came with your system.

Filter

Knob

Bowl

hous-

ing